Per BBC, Silver King (real name Cesar Barron), “was performing at the Roundhouse in Camden when he reportedly fell to the canvas”. The former WCW star was wrestling in London at the Great Show of Lucha Libre event on Saturday. Footage from the event saw medical staff rushing to the ring to provide medical assistance, and it is believed that he suffered a heart attack.

Support and tributes have been all over social media this morning, with NXT General Manager William Regal expressing his sadness upon learning of the “passing of [his] friend”, with both working in WCW in the 1990s.

Very sorry to hear of the passing of my friend, the great Mexican Luchadore Silver King. He was always a pleasure to spend time with and wrestle when we were both in WCW in the 90’s.

Eric Bischoff, who Silver King would have worked for in WCW, said that the masked wrestler “helped Americans appreciate Lucha Libre”.

I am saddened to hear about the passing of Silver King. Like so many of the great Luchadores that helped Americans appreciate Lucha Libre and make Nitro the success it was, he will be missed. Thank you and RIP.

Finally, WWE Hall of Famer X-Pac shared the following touching tribute to King, saying that he was “heartbroken to learn of his passing” and praised Silver for being “truly one of the greats”.

It was an honor to have been friends & shared the ring with the great Silver King. He & Tejano were an amazing team. He truly was one of the greats & I'm heartbroken to learn of his passing. 🙏 #RIPSilverKingpic.twitter.com/WhM1zM9jfp